taxonID	type	description	language	source
F4EB0277C0765B7ABBFF5A7170710C9B.taxon	type_taxon	Type species. Sesarma (Geosesarma) nodulifera De Man, 1892, subsequent designation by Serène and Soh (1970).	en	Ng, Peter K. L. (2026): Geosesarma wongi sp. nov., a distinctive new species of semiterrestrial crab from Tapah Hills in Perak, Peninsular Malaysia; with notes on G. peraccae (Nobili, 1903) and G. cataracta Ng, 1986 (Crustacea, Brachyura, Sesarmidae). ZooKeys 1266: 281-298, DOI: 10.3897/zookeys.1266.172575
91E6CB1F1BB55703B18D3EB3037717FC.taxon	description	Figs 1, 2, 3, 4, 5	en	Ng, Peter K. L. (2026): Geosesarma wongi sp. nov., a distinctive new species of semiterrestrial crab from Tapah Hills in Perak, Peninsular Malaysia; with notes on G. peraccae (Nobili, 1903) and G. cataracta Ng, 1986 (Crustacea, Brachyura, Sesarmidae). ZooKeys 1266: 281-298, DOI: 10.3897/zookeys.1266.172575
91E6CB1F1BB55703B18D3EB3037717FC.taxon	diagnosis	Diagnosis. Carapace rectangular, wider than long, width to length ratio 1.11 – 1.14, lateral margins almost straight, gently divergent towards posterior carapace margin (Fig. 2 A, B); dorsal surfaces with well-defined regions, anterior half with prominent low, rounded tubercles and granules; postfrontal lobes distinct, median lobes with transverse row of relatively dense short setae, setae sparser on lateral lobes; epibranchial region raised; protogastric region gently convex; urogastric region raised, with gastrocardiac groove deep (Fig. 2 A, B); frontal margin distinctly deflexed, frontal lobes broad, with gently convex margins in dorsal view, separated by wide shallow median concavity; postfrontal cristae sharp, distinct (Fig. 2 A – C); external orbital angle triangular, directed anteriorly, not extending beyond lateral carapace margin, outer lateral margin gently convex; separated from first epibranchial tooth by V-shaped cleft; first epibranchial tooth distinct, wide, second epibranchial tooth just visible as low lobe (Fig. 2 A, B); merus of third maxilliped subovate; exopod slender, flagellum elongate, longer than width of merus (Fig. 5 A); outer surfaces of palm of chela covered with numerous small rounded granules (except at bases of pollex and dactylus), with cluster of closely packed larger ones on lower half, just posterior to pollex; inner surface with prominent flange-like transverse ridge lined by large rounded tubercles, surface of flange concave; fingers distinctly longer than palm, dorsal margin of dactylus with 15 – 17 small sharp granules arranged unevenly on surface, not in a row; dactylus with broad median molariform tooth on cutting edge; pollex with 2 distinct teeth on proximal half of cutting edge (Fig. 3 A – D); ambulatory merus with sharp subdistal spine on dorsal margin, surface weakly rugose, propodus slender, relatively long; P 4 merus length 3.0 times width; P 2 propodus and dactylus without dense tuft of setae on flexor margins (Figs 2 A, 3 E, F); pleon broadly triangular; somite 3 widest, somite 6 wide, width to length ratio 2.6 – 2.7, lateral margins convex; telson triangular, 0.8 – 0.9 times longer than broad, lateral margins gently convex (Fig. 4 B, C); G 1 relatively slender, distal part bent at angle of ca. 50 ° along longitudinal axis, outer margin of subdistal part gently convex, without any shelf-like feature, distal chitinous elongate, tapering sharply in lateral view, subspatuliform in marginal view with distinct median cleft distally (Fig. 5 B – I); vulvae positioned close to each other, opening laterally oblique (Fig. 4 F).	en	Ng, Peter K. L. (2026): Geosesarma wongi sp. nov., a distinctive new species of semiterrestrial crab from Tapah Hills in Perak, Peninsular Malaysia; with notes on G. peraccae (Nobili, 1903) and G. cataracta Ng, 1986 (Crustacea, Brachyura, Sesarmidae). ZooKeys 1266: 281-298, DOI: 10.3897/zookeys.1266.172575
